最終更新日：2024/07/30
(physics, astronomy) A unit of brightness (of the sky at night) equal to 10¹⁰/4π quanta per square meter per second per steradian
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rayleigh
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(physics, astronomy) A unit of brightness (of the sky at night) equal to 10¹⁰/4π quanta per square meter per second per steradian
rayleigh
DiQt（ディクト）
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